Fig. 4From: Disagreement in cardiac output measurements between fourth-generation FloTrac and critical care ultrasonography in patients with circulatory shock: a prospective observational studyFour-quadrant plot showing the trend of COAP versus COCCUS. Exclusion zone of 0.5 L min−1 (white area). Abbreviations: COAP, cardiac output measured using fourth-generation FloTrac™ algorithm; COCCUS, cardiac output measured by critical care ultrasonographyBack to article page